Main applications of the compact single pole combistat (TR + STB)
Water heaters, immersion heaters, sauna heaters, electric radiators, electro-thermal heating equipments...
Technical features
Housing dimensions: 50 × 42 × 30mm (Without adjusting shaft, terminals, bulbs and capillaries). Compact form. Assembly time savings
Capillary of the fail-safe reset: Copper, capillary length 250mm, 500 or 900mm. Black PVC sleeve on capillary. Capillary minimum bending radius 5mm.
Special lengths on request.
Bulb of the fail-safe reset: Copper, corkscrew type for temperatures from 60 to 130°C (140 to 266°F). Straight uncoiled or half length bended capillary available on request.
Temperature sensing element of fail-safe diastat: Copper capillary, liquid-filled thermostatic assembly whose boiling causes tripping of the contact. Therefore, unlike liquid expansion systems, these thermostats are sensitive to atmospheric pressure, and their reaction time is faster than liquid filled diastats.
Measuring element of the temperature control diastat: Liquid-filled thermostatic assembly, the expansion of which triggers the contact. Bulb and capillary in stainless steel, with transparent PVC sleeve. As standard, the two capillaries have the same length and the two bulbs have the same diameter. Different lengths on request.
Terminals: Four 6.35 × 0.8 quick connect terminals, or two M4 input screw terminals and two 6.35 × 0.8 quick connect terminals for connection to heater. In the model with one auxiliary close on rise terminal, this output connection is mandatory 6.35 × 0.8 tab.
6.35 × 0.8 tabs can have different bending angle. References on request. (MOQ apply)
Adjustment: Fixed setting for manual reset safety, adjustment by 6mm shaft with 4.6mm flat, standard length 11.5mm for the temperature control thermostat (Other possible lengths: 14, 20, 25mm on request).
The temperature control shaft is available with 180 or 270° mechanical angulation.
Mounting: 2 x M4 screws, 28mm distance.
Access to manual reset: By freely accessible push button or by push button protected by a non-protruding M10 plastic cap (optional).
Contacts: Double pole single throw 20A 250V snap action contact for the fail-safe and 20A 250V single pole single throw for the temperature control.
Max ambient temperature on body: 125°C (257°F). Must not be higher than calibration temperature of fail-safe contact minus 10°C (-18°F)
Options :
- M10 screwed cap protection for the manual reset button
- M4 input screws terminal instead of faston 6,35 x 0,8mm
- 6.35×0.8 ground terminal
- 1 close on rise auxiliary contact on the line terminal of fail-safe contact.
Full customisation available on request for large quantities, so please don't hesitate to contact us.
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